How long does it take to complete a program in Digital marketing ?

I’m interested in learning digital marketing and wanted to understand how much time I should realistically set aside for it. I’ve come across different types of programs online, but the duration seems to vary a lot depending on the course and level.

Can anyone share how long it usually takes to complete a digital marketing program? Also, does the timeline differ for beginners compared to those with some prior knowledge? I’d also like to know if there are flexible options like part-time or fast-track courses, and how long they typically take.

Additionally, how much extra time should be considered for practical learning and becoming job-ready in this field?

Would really appreciate insights or personal experiences. Thanks in advance!